中国岩溶2012，Vol.31Issue(2)：212-219,8.
蜀南地区茅口组古岩溶地貌与缝洞系统发育关系研究
Research on the relation between the ancient karst landform and the development features of fissure-cavity system in the Maokou formation in Shunan region
摘要
Abstract
The ancient karst landform of the Maokou formation in Shunan region controls the facture-cavern system's development. According to the thickness distribution of the Maokou formation in the region, the surface erosion on weathering crust and sediment properties as well as the degree of preservation of the Maokou formation, the ancient karst landforms in the Maokou formation can be recognized as or divided into three 2nd grade landform units as karst platform, karst slope (further divided into the western steep slope and northeastern gentle slope belt) and karst basin. Then the relationship of geomorphic unit and the cave system is studied. The results show that; water in karst platform seeps mainly vertically, weathering is strong, vertical solution fissure and cave is often filled with clay; the karstification is the strongest in the karst steep slope and the transition zone of karst steep slope to karst platform where pore and cave are developed, filling rate is low, fissure-cavity system develops best, and is favorable for exploration; the speed of water flow in karst gentle slope is slow, karst cycle is long and fissure-cavity system is easy to be filled, which does not conducive to fissure-cavity reservation; the erosional space in karst basin is less, and the reservoir performance is poor, which makes the area unfavorable for exploration.关键词
岩溶储层/古岩溶地貌/缝洞系统/蜀南地区Key words
karst reservoir/ancient karst landform/fracture-cavity system/Shunan region分类
天文与地球科学引用本文复制引用
桑琴,黄静,程超,未勇,吕宗刚,吴昌龙,彭祚远..蜀南地区茅口组古岩溶地貌与缝洞系统发育关系研究[J].中国岩溶,2012,31(2):212-219,8.基金项目
四川省重点学科建设项目(编号:SZD0414) （编号:SZD0414）
